<template>
    <div class="login">
        <div class="login_box">
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>

            <el-form label-width="0px" class="login_form" ref="loginFormRef" :model="loginForm" :rules="loginFormRules">
                <el-form-item prop="username">
                    <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username">
                    </el-input>
                </el-form-item>

                <el-form-item prop="password">
                    <el-input prefix-icon="iconfont icon-3702mima" v-model='loginForm.password' type="password">
                    </el-input>
                </el-form-item>

                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>

            </el-form>

        </div>

    </div>
</template>


<script>
import { loginPage } from '../utils/api.js'
export default {
    data() {
        return {
            loginForm: {
                username: 'admin',
                password: '123456'
            },
            //element校验规则
            loginFormRules: {
                username: [
                    { required: true, message: '请输入登录名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入登录密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods: {
        // 点击重置
        resetLoginForm() {
            this.$refs.loginFormRef.resetFields()
        },
        // 点击登录
        login() {
            this.$refs.loginFormRef.validate(async valid => {
                if (!valid) return;
                const { data: res } = await loginPage(this.loginForm);
                if (res.meta.status !== 200) return this.$message.error('登录失败！');
                this.$message.success('登录成功！')
                // 1．将登录成功之后的 token,保存到客户端的sessionStorage中
                // 1.1项目中出了登录之外的其他API接口，必须在登录之后才能访问
                //1.2 token只应在当前网站打开期间生效，所以将 token保存在 sessionStorage中
                //  console.log(res);
                window.sessionStorage.setItem('token', res.data.token);
                //2．通过编程式导航跳转到后台主页，路由地址是/home
                this.$router.push('/home');
            })
        }

    }
}
</script>


<style lang="less" scoped>
.login {
    height: 100%;
    background: #2b4b6b;
}

.login_box {
    width: 450px;
    height: 300px;
    background: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
        padding: 10px;
        height: 130px;
        width: 130px;
        border-radius: 50%;
        border: 1px solid #eee;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
        background: #fff;

        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }

    .btns {
        display: flex;
        justify-content: flex-end;
    }

    .login_form {
        padding: 0 20px;
        position: absolute;
        bottom: 0;
        width: 100%;
    }

}
</style>